Improvement in hydrants



mc. BAILE-Y) Hydrant. N0. 158,599. Patented Oct.1l,875.

SWS

NPETEF!S, PHOTO-LITHOGRAFHER. WASHINGTON, D C,

Urvrrnn STATES vA'rENfr GEORGE O. BAILEY, OF PITTSBURG, PENNSYLVANIA.

IMPRovEMENT IN H'vDRANTs.

lSpecification forming part of Letters Patent No. 168,599, dated October11, 1875; application filed August 26, 1875.

OASE B.

To all whom it may concern:

Be it known that I, GEORGE C. BAILEY, of Pittsburg, county of Allegheny,State of Pennsylvania, have invented or discovered a new and usefulImprovement in Hydrants; and I do hereby declare the following to be afull, clear, concise, and exact description thereof, reference being hadto the accompanying drawing making a part of this specification, inwhich My improvement relates to the construction of a valve andvalve-case particularly designed for hydrant use, wherein, by thefeatures of construction and combination hereinafter described andclaimed, the waste is closed before or in advance of the opening of thesupply, and the supply is closed in advance of the opening of the waste.

The supply-pipe A has a suitable supplyport and valve-seat at a. Thevalve-case B containsV a cylindrical barrel or chamber, c, in whichthevalves b b1 are moved up and down. These valves are attached to-andoperated by a moving water way, B', which leads up to the place or pointof discharge. They are made of leather or other suitable material, andtheir cylindrical faces play closely in the barrel c of the case B, likeordinary piston-valves. In the valve-case B I make one, two, or morelateral ports, e, which connect the lower part of the chamber c, at a point a little aboveits lower end, with the upper part of the samechamber at a point a littlebelow its upper end. The stem b2 ofthe hollowwater-way is made a little smaller than the chamber c, in which itplays, and the bore or tubular opening of the moving water-way iscontinued down to a point intermediate between the pistonvalves b b1,where, by suitable'ports s, communication is effected with its exterior.A

groove, o, is preferably made between the valves, as shown.

The sizes of the ports c and thefdistances between their ends, and alsothe length of the piston-faces of the valves b b1 and their distanceapart, are relatively so made and arranged that, rst, when the moving`water-way is down, as in Fig. 2, the lower piston-valve, b, will occupythe lower end of the chamber c, and cut off the supply, and the upperpistonvalve, b1, will occupy a position intermediate between the upperand lower ends of the ports e, so that the water already in the movingwater-way above the level of the upper end of case B may have anuninterrupted waste-passage through the ports s and e, and the annularor other shaped passage c between the stem b2 and the case B, and outover the upper end'of B; second, as the moving waterway is raised theupper piston-valve b1 covers the upper ends ofthe ports e, as shown inFig. 3, so as to close or cut off the waste before the lowerpiston-valve b uncovers the lower ends of said ports c, so as thereby toopen the supply; third, when the moving water-way'is still furtherraised for the discharge of water the waste continues to be cut off bymeans of the upper piston-valve b1, as shown in Fig. 4, both ends of theports e are uncovered, the upper ends are brought into communicationwith the ports s, and the lower ends with the supplyport a,- the wateris then free to ilowyand, fourth, in giving' a down-stroke tothe valvesthe devices come first into the relationship shown in Fig. 3, in whichthe supply is cut oi' by the lower piston-valve b before the waste isopened by the upper one. By continuing the down-stroke the'waste isreopened, as illustrated in Fig. 2. A

While I am aware that lateral ports some what similar to those shown ate are not new as waste-ports, I am not aware that such ports have everbefore been combined with any construction of valve which enabled themto pei'- form alternately the function o f waste and supply ports.

I claim as my inventionl. In a hydrant valve-case, one or more late'i'alports, e, opening at both ends into the

